Light oil heating device

The utility model discloses a light oil heating device, which comprises a combustion spray head, an air inlet tube and an oil inlet tube, wherein one end of the air inlet tube is connected and communicated with the combustion spray head by an oil tube connecting barrel; the other end of the air inlet tube is provided with an air inlet tube joint connected with an air blower; an air valve is arranged on the air inlet tube; one end of the oil inlet tube is obliquely inserted to the inner cavity of the oil inlet tube connecting barrel, and connected and communicated with the combustion spray head; the other end of the oil inlet tube is provided with a connecting head connected with an oil conveying hose; and an oil valve is arranged on the oil inlet tube. The combustion spray head comprises an outer barrel and an inner barrel, wherein the inner barrel is shorter than the outer barrel; a gap is kept between the inner barrel and the outer barrel as an air channel; and a small hole which is communicated with the ai